Citation: Limei Tian, Rong Liu, Zijian Zhao, Pengju Li, Weijian Yang, Fushuang Niu, Ke Hu. Panchromatic solar absorption enables multi-photon CO₂ carboxylation: Mechanistic insights in consecutive photoinduced electron transfer[J]. Chinese Chemical Letters, ;2026, 37(9): 112521. doi: 10.1016/j.cclet.2026.112521 shu

Panchromatic solar absorption enables multi-photon CO₂ carboxylation: Mechanistic insights in consecutive photoinduced electron transfer

Limei Tian ^a ,
Rong Liu ^a ,
Zijian Zhao ^a ,
Pengju Li ^a ,
Weijian Yang ^a ,
Fushuang Niu ^c ,
Ke Hu ^{a, b, *,}

a.
Department of Chemistry, Fudan University, Shanghai 200433, China
b.
School of Chemical Science and Engineering, Tongji University, Shanghai 200092, China
c.
School of Materials Science and Engineering, Linyi University, Linyi 276000, China

khu@tongji.edu.cn

Received Date: 23 July 2025
Revised Date: 10 February 2026
Accepted Date: 11 February 2026
Available Online: 11 February 2026

Figures(6)

Inspired by natural photosynthesis, visible-light-driven carboxylation of carbon dioxide for the synthesis of value-added chemicals has attracted considerable attention. However, the current limitation in carboxylation lies in the narrow absorption range of the photocatalysts used. These photocatalysts are predominantly activated by blue light, limiting the utilization of most of the solar light. Herein, we employed the organic dye N,N-bis(2,6-diisopropylphenyl)perylene-3,4,9,10-bis(dicarboximide) (PDI), along with its single-electron-reduced state PDI^•− through consecutive photoinduced electron transfer (ConPET), effectively absorbs panchromatic solar spectrum for photocatalytic dicarboxylation. Mechanistic investigations using femtosecond time-resolved transient absorption (fs-TA) spectroscopy unequivocally identified the excited state of the singly reduced species, PDI^•−*, rather than the doubly reduced form, as the key intermediate responsible for the reductive activation of alkenes. Furthermore, efficient solar-driven carboxylation of CO₂ was successfully demonstrated under natural sunlight irradiation, underscoring the practical potential of this photocatalytic system.
- Solar energy conversion,
- Dicarboxylation,
- Panchromatic absorption,
- CO₂ utilization,
- Consecutive photoinduced electron transfer
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Panchromatic solar absorption enables multi-photon CO2 carboxylation: Mechanistic insights in consecutive photoinduced electron transfer

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通讯作者: 陈斌, bchen63@163.com

Panchromatic solar absorption enables multi-photon CO₂ carboxylation: Mechanistic insights in consecutive photoinduced electron transfer